mkimage: allow zynqmpbif to use a register initialization file

The ZynqMP Boot Image Format allows specifying the register
initialization file with the "[init]" attribute.  Since this
feature is already supported by the "zynqmpimage" backend, this
commit leverages that existing capability to add support for the
"[init]" attribute in the zynqmpbif backend:
https://docs.amd.com/r/en-US/ug1283-bootgen-user-guide/init

This currently uses the same register initialization file format as
zynqmpimage (ASCII text hex values with each line composed of a pair
of register address and value), for example:
===
0xff003248 0x12345678
===
It is not, yet, compatible with the format used by bootgen:
https://docs.amd.com/r/en-US/ug1283-bootgen-user-guide/Initialization-Pairs-and-INT-File-Attribute

Use this feature, with other zynqmpbif options, like so:
===
image : {
     [init] reginit.int
     [bootloader] fsbl.elf
     [pmufw_image] pmufw.elf
     [destination_cpu=a53-0, exception_level=el-3] bl31.elf
     [destination_cpu=a53-0, exception_level=el-2, load=0x08000000,
startup=0x08000000] u-boot.bin
}
===

Signed-off-by: Erich E. Hoover <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

0 files changed, 0 insertions, 0 deletions